National FS-5000
This page was last modified 03:53, 18 January 2021 by Mars2000you. Based on work by Grauw and Rderooy and others.




The model FS-5000 is based on FS-5500F2. The name of this computer is FS-5000 as indicated on front, but the label on back and on the box specifies its link with the FS-5500F2 model by indicating FS-5000F2.

Audio/video control panel, trackball and superimpose/digitize capabilities have been removed but the memory goes up to 128kB. It was aimed at the Japanese market. Only the version with 2 floppy disk drives was released (there is no FS-5000F1).

The PSG sound output is stereo, with a switch at the back. Another switch allows a selection between JP50on or JIS keyboard layout.

The data of the Ricoh RP-5C01 clock chip can be backed up on a FS-CR1008S cartridge. This feature is exclusive to the FS-5000 and FS-5500 computers. These professional computers have three expansions slots that can be used to increase the RAM.

Brand National
Type FS-5000
Year November 1986
Region Japan
Original price ¥158,800
RAM 128kB in slot 3-2
VRAM 128kB
Media MSX cartridges, 2DD floppy disks
Video Yamaha V9938
Audio PSG
Chipset Probably Yamaha S1985
Keyboard layout QWERTY/JIS by default (JP50on available with switch)
Extras Two 720kB 3,5" floppy disk drives, separate keyboard, reset button, eject button for each cartridge slot, switch for choosing keyboard layout, stereo PSG sound with switch, general volume controller at front, headphone jack with volume controller at front, backup of the clockchip data, kanji driver, MSX-DOS 1 + Japanese Word Processor (on disk)
Emulation ROMs dumped and emulated, except for the 3 special expansion slots in the back which need validation. Keyboard switch is set to JIS and cannot be changed.


Besides MSX-DOS 1, the provided floppy disk contains a Japanese Word Processor with 5 options: 1 - New text - 2 - Edit text - 3 - Print - 4 - Save - 5 - Load. Options 1 and 2 are preceded by the text settings, option 3 by the printer settings.

The procedure used for the kana-kanji conversion is the same as with the FS-4500 or FS-4700 firmware, and is not compatible with MSX-JE. Besides, the FS-5000 does not have a Kanji-ROM, so the JIS1 support is actually on the floppy disk.

To run MSX-DOS, you need to press CTRL+STOP when booting with the disk in drive A, this to avoid the launching of the Word Processor.



National FS-5000
National FS-5000 front
National FS-5000 back
National FS-5000 front
National FS-5000 back
National FS-5000 keyboard
National FS-5000 inside
National FS-5000/FS-5500 Expansion Slots Board
National FS-5000 box (close-up)
National FS-5000 label


National FS-5000 Japanese Word Processor - intro screen
National FS-5000 Japanese Word Processor - creating mode
National FS-5000 Japanese Word Processor - printer settings


The National FS-5000 is a MSX2 with 2 cartridge slots and two 3.5" disk drives on the front. The CPU is a Z80, probably from NEC (D780C-1). The MSX-Engine comes from Yamaha (probably S1985). The floppy disk controller is the MB8876A from Fujitsu Microelectronics.

The three slots in the back have the same pinout as standard expansion slot but the connector is different. The location seems to be the slots #0-1, #0-2 and #0-3.

Slot Map

Help needed
The location of the three expansion slots needs to be checked on a real machine.
Slot Slot
0-0 0-1 0-2 0-3 Slot 1 Slot 2 3-0 3-1 3-2 3-3
Page C000h~FFFFh Slot
Slot 1
Slot 2
Page 8000h~BFFFh Kanji
Page 4000h~7FFFh Main-ROM Disk ROM
Page 0000h~3FFFh Sub-ROM


  • RF output with channel selector switch
  • RGB output (RGB21)
  • Video composite and analog sound output (RCA)
  • Keyboard connector
  • Headphone jack (3.5mm?)
  • Centronics compatible Parallel port for a printer
  • Data Recorder connector
  • 2 general connectors (Joysticks, Mouse, Paddle controlers, etc)
  • 2 cartridge slots at front
  • 3 expansion slots on the back
  • Power plug for main power supply (JIS C 8303 class, AC 100V +/-10% 50/60Hz)
  • 2 power outlets for monitor (AC 100V)
  • Floating ground